Flat-plate solar heat collector

Abstract

The invention relates to a flat-plate solar heat collector which comprises a heat storage water tank, a heat collecting device and metal heat pipes. The heat collecting device is connected with the heat storage water tank and is used for collecting solar energy. The heat collecting device comprises a frame which is provided with a transparent cover plate. A heat absorption layer is arranged in the frame. The metal heat pipes are arranged between the heat storage water tank and the heat collecting device and heat water in the heat storage water tank in a heat-conducting mode. The flat-plate solar heat collector has the advantages that through the multiple sets of metal heat pipes, heat exchanging efficiency is improved, water in the heat storage water tank can be quickly heated, heat absorption coating layers are arranged on the metal heat pipes, heat absorption efficiency is high, water in the heat storage water tank can be quickly heated, a heat preservation layer is arranged between the heat storage water tank and a heat collecting water tank, when no light exists, heat cannot be conducted in a reverse mode through a phase-changing process, heat in the water tank can only be conducted and dissipated weakly through a pipe wall, accordingly, the problem that a flat-plate solar water heater dissipates a large amount of heat at night is solved, water scale cannot be generated in a pipe, and the service life of a product is prolonged.

Description

technical field [0001] The invention relates to the technical field of solar heat collection, in particular to a flat-plate solar heat collector. Background technique [0002] With the development of modern industry and society, human society is increasingly dependent on resources and energy. As we all know, the resources and energy on the earth are limited, so in various economic, political, and scientific research activities, the issue of resources and energy has become the primary issue. And since some resources can be recycled and reused through some artificial processes, the problem of energy is more prominent. Solar energy is the most abundant energy available to human beings, and it is also the cheapest, cleanest, and most promising energy source. Solar thermal collectors are the main way to directly utilize and absorb solar energy. The efficiency of solar thermal collectors is high, much higher than other solar energy utilization methods. [0003] At present, the ...

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Problems solved by technology

[0003] At present, the flat-panel solar collectors transfer energy through the natural convection heat exchange of water in the coil on the heat absorber, and the transfer efficiency is relatively low. In addition, in places with poor water quality, a large amount of scale is generated on the heat exchange pipes at high temperatures, which is easy to be damaged into pipes. Blockage, when there is no light, the heat in the hot water storage tank will be dissipated quickly through the coil in the collector. Usually, there is no cleaning mechanism on the surface of the heat collector. After long-term use, dust will easily accumulate and affect the light.

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